KENNETT SQUARE, PA · Chester County

LONGWOOD GARDENS Water System

Current status

1 item on record is open and awaiting resolution as of July 4, 2026. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings. Full details are in the violation history below.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Pennsylvania’s official records. Always confirm current status with Pennsylvania before making decisions based on this information.

System facts

System ID (PWSID): PA1150131
System type: Community Water System
Population served: 440
Service connections: 54
Ownership: privately owned
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Lead Consumer Notice
—
Lead and Copper Rule
January 1, 2026
Unaddressed
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2025 – September 30, 2025
Archived
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2025 – September 30, 2025
Archived
Monitoring, Regular
—
Benzo(a)pyrene
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
April 1, 2025 – June 30, 2025
Resolved
Monitoring, Regular
—
Atrazine
April 1, 2025 – June 30, 2025
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
January 13, 2025 – August 28, 2025
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Groundwater Rule
January 1, 2025 – January 31, 2025
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Simazine
October 1, 2024 – December 31, 2024
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
LASSO
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
Chlordane
January 1, 2024 – March 31, 2024
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
January 1, 2024 – January 31, 2024
Resolved
Monitoring, Regular
—
Endrin
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
Dalapon
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
Diquat
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
Endothall
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
Glyphosate
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
Simazine
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
Picloram
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2024 – March 31, 2024
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2024 – March 31, 2024
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
August 1, 2023 – August 31, 2023
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Groundwater Rule
July 1, 2021 – July 31, 2021
Resolved
Monitoring and Reporting (DBP)
—
TTHM
July 1, 2019 – September 30, 2019
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
July 1, 2019 – September 30, 2019
Resolved
Monitoring, Regular
—
Radium-226
October 1, 2016 – December 31, 2016
Resolved
Monitoring, Regular
—
Radium-228
October 1, 2016 – December 31, 2016
Resolved
Monitoring, Regular
—
Combined Uranium
October 1, 2016 – December 31, 2016
Resolved
Sample Siting Plan Errors (RTCR)
—
Revised Total Coliform Rule
April 1, 2016 – April 20, 2016
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2012 – March 19, 2012
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2011 – November 28, 2011
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
January 1, 2011 – March 18, 2011
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2010 – September 28, 2010
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2009 – June 30, 2009
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
January 1, 2008 – January 31, 2008
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2006 – September 28, 2006
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2006 – June 30, 2006
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2004 – September 30, 2004
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2002 – November 30, 2002
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2002 – December 31, 2002
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
Benzene
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
Toluene
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
Styrene
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 2000 – March 31, 2000
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
February 1, 2000 – February 29, 2000
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2000 – December 31, 2000
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1999 – December 31, 1999
Resolved
Monitoring, Regular
—
Benzene
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
CHLOROBENZENE
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
Tetrachloroethylene
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
Trichloroethylene
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
Carbon tetrachloride
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
Xylenes, Total
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
Styrene
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
Ethylbenzene
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
Toluene
July 1, 1994 – September 30, 1994
Resolved
Monitoring, Regular
—
Toluene
April 1, 1994 – June 30, 1994
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
April 1, 1994 – June 30, 1994
Resolved
Monitoring, Regular
—
Xylenes, Total
April 1, 1994 – June 30, 1994
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
April 1, 1994 – June 30, 1994
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
April 1, 1994 – June 30, 1994
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
April 1, 1994 – June 30, 1994
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
April 1, 1994 – June 30, 1994
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
April 1, 1994 – June 30, 1994
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
April 1, 1994 – June 30, 1994
Resolved
Monitoring, Regular
—
Carbon tetrachloride
April 1, 1994 – June 30, 1994
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
April 1, 1994 – June 30, 1994
Resolved
Monitoring, Regular
—
Trichloroethylene
April 1, 1994 – June 30, 1994
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
April 1, 1994 – June 30, 1994
Resolved
Monitoring, Regular
—
Tetrachloroethylene
April 1, 1994 – June 30, 1994
Resolved
Monitoring, Regular
—
CHLOROBENZENE
April 1, 1994 – June 30, 1994
Resolved
Monitoring, Regular
—
Benzene
April 1, 1994 – June 30, 1994
Resolved
Monitoring, Regular
—
Ethylbenzene
April 1, 1994 – June 30, 1994
Resolved
Monitoring, Regular
—
Styrene
April 1, 1994 – June 30, 1994
Resolved
Monitoring, Regular
—
Styrene
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
Toluene
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
Benzene
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 1994 – March 31, 1994
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
August 1, 1976 – July 31, 1980
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
August 1, 1976 – July 31, 1980
Archived

Unaddressed no corrective action on record yetArchived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
January 1, 2026	Lead Consumer Notice	Lead and Copper Rule	—	Unaddressed
July 1, 2025 – September 30, 2025	Monitoring and Reporting (DBP)	TTHM	—	Archived
July 1, 2025 – September 30, 2025	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Archived
April 1, 2025 – June 30, 2025	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
April 1, 2025 – June 30, 2025	Monitoring, Regular	Atrazine	—	Resolved
January 13, 2025 – August 28, 2025	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2025 – January 31, 2025	Treatment Technique (SWTR and GWR)	Groundwater Rule	Health-based	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
October 1, 2024 – December 31, 2024	Monitoring, Regular	Simazine	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	LASSO	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	Chlordane	—	Resolved
January 1, 2024 – January 31, 2024	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	Endrin	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	Toxaphene	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	Dalapon	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	Diquat	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	Endothall	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	Glyphosate	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	Simazine	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	Picloram	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2024 – March 31, 2024	Monitoring, Regular	Atrazine	—	Resolved
August 1, 2023 – August 31, 2023	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
July 1, 2021 – July 31, 2021	Monitoring of Treatment (SWTR-Unfilt/GWR)	Groundwater Rule	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring and Reporting (DBP)	TTHM	—	Resolved
July 1, 2019 – September 30, 2019	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2016 – December 31, 2016	Monitoring, Regular	Radium-226	—	Resolved
October 1, 2016 – December 31, 2016	Monitoring, Regular	Radium-228	—	Resolved
October 1, 2016 – December 31, 2016	Monitoring, Regular	Combined Uranium	—	Resolved
April 1, 2016 – April 20, 2016	Sample Siting Plan Errors (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2012 – March 19, 2012	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 1, 2011 – November 28, 2011	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2011 – March 18, 2011	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
July 1, 2010 – September 28, 2010	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
June 1, 2009 – June 30, 2009	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2008 – January 31, 2008	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2006 – September 28, 2006	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
April 1, 2006 – June 30, 2006	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 1, 2004 – September 30, 2004	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
November 1, 2002 – November 30, 2002	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2002 – December 31, 2002	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	Benzene	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	Toluene	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	Styrene	—	Resolved
March 1, 2000 – March 31, 2000	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
February 1, 2000 – February 29, 2000	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 2000 – December 31, 2000	Monitoring, Regular	Arsenic	—	Resolved
January 1, 1999 – December 31, 1999	Monitoring, Regular	Nitrate	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	Benzene	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	CHLOROBENZENE	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	Tetrachloroethylene	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	Trichloroethylene	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	Carbon tetrachloride	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	Xylenes, Total	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	Styrene	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	Ethylbenzene	—	Resolved
July 1, 1994 – September 30, 1994	Monitoring, Regular	Toluene	—	Resolved
April 1, 1994 – June 30, 1994	Monitoring, Regular	Toluene	—	Resolved
April 1, 1994 – June 30, 1994	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
April 1, 1994 – June 30, 1994	Monitoring, Regular	Xylenes, Total	—	Resolved
April 1, 1994 – June 30, 1994	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
April 1, 1994 – June 30, 1994	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
April 1, 1994 – June 30, 1994	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
April 1, 1994 – June 30, 1994	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
April 1, 1994 – June 30, 1994	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
April 1, 1994 – June 30, 1994	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
April 1, 1994 – June 30, 1994	Monitoring, Regular	Carbon tetrachloride	—	Resolved
April 1, 1994 – June 30, 1994	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
April 1, 1994 – June 30, 1994	Monitoring, Regular	Trichloroethylene	—	Resolved
April 1, 1994 – June 30, 1994	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
April 1, 1994 – June 30, 1994	Monitoring, Regular	Tetrachloroethylene	—	Resolved
April 1, 1994 – June 30, 1994	Monitoring, Regular	CHLOROBENZENE	—	Resolved
April 1, 1994 – June 30, 1994	Monitoring, Regular	Benzene	—	Resolved
April 1, 1994 – June 30, 1994	Monitoring, Regular	Ethylbenzene	—	Resolved
April 1, 1994 – June 30, 1994	Monitoring, Regular	Styrene	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	Styrene	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	Toluene	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	Benzene	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 1994 – March 31, 1994	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
August 1, 1976 – July 31, 1980	Monitoring, Regular	Combined Radium (-226 and -228)	—	Archived
August 1, 1976 – July 31, 1980	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

Unaddressed no corrective action on record yetArchived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state

Enforcement actions

February 6, 2026State Formal Notice of Violation issued1 linked violation
November 12, 2025State Formal Notice of Violation issued2 linked violations
November 12, 2025State Public Notification requested2 linked violations
August 28, 2025State Compliance achieved1 linked violation
August 26, 2025State Public Notification received7 linked violations
August 26, 2025State Public Notification requested1 linked violation
August 26, 2025State Compliance achieved6 linked violations
August 21, 2025State Compliance achieved5 linked violations
August 7, 2025State Formal Notice of Violation issued5 linked violations
May 9, 2025State Violation/Reminder Notice1 linked violation
May 9, 2025State Formal Notice of Violation issued1 linked violation
February 11, 2025State Violation/Reminder Notice5 linked violations
June 18, 2024State Compliance achieved29 linked violations
June 18, 2024State Compliance achieved1 linked violation
June 18, 2024State Public Notification received1 linked violation
June 18, 2024State Violation/Reminder Notice1 linked violation
June 18, 2024State Violation/Reminder Notice1 linked violation
June 18, 2024State Public Notification received29 linked violations
May 8, 2024State Violation/Reminder Notice28 linked violations
March 12, 2024State Public Notification requested1 linked violation
March 12, 2024State Formal Notice of Violation issued1 linked violation
November 21, 2023State Compliance achieved1 linked violation
November 8, 2023State Formal Notice of Violation issued1 linked violation
November 8, 2023State Public Notification requested1 linked violation
October 10, 2023State Public Notification requested1 linked violation
October 10, 2023State Formal Notice of Violation issued1 linked violation
February 4, 2022State Compliance achieved1 linked violation
August 27, 2021State Violation/Reminder Notice1 linked violation
July 7, 2020State Public Notification received2 linked violations
July 7, 2020State Compliance achieved2 linked violations
July 7, 2020State Public Notification requested2 linked violations
December 13, 2019State Violation/Reminder Notice2 linked violations
November 6, 2019State Violation/Reminder Notice2 linked violations
March 28, 2017State Compliance achieved3 linked violations
April 20, 2016State Compliance achieved1 linked violation
March 19, 2012State Compliance achieved1 linked violation
March 19, 2012State Violation/Reminder Notice1 linked violation
November 28, 2011State Compliance achieved1 linked violation
August 25, 2011State Violation/Reminder Notice1 linked violation
August 25, 2011State Violation/Reminder Notice1 linked violation
March 18, 2011State Compliance achieved1 linked violation
February 28, 2011State Violation/Reminder Notice1 linked violation
September 28, 2010State Compliance achieved1 linked violation
September 24, 2010State Compliance achieved1 linked violation
September 20, 2010State Violation/Reminder Notice1 linked violation
September 20, 2010State Public Notification requested1 linked violation
February 8, 2010State Compliance achieved1 linked violation
July 24, 2009State Compliance achieved1 linked violation
February 27, 2008State Compliance achieved1 linked violation
September 28, 2006State Compliance achieved1 linked violation
August 16, 2006State Compliance achieved1 linked violation
October 25, 2004State Compliance achieved1 linked violation
October 4, 2004State Compliance achieved1 linked violation
October 4, 2004State Violation/Reminder Notice1 linked violation
April 9, 2003State Compliance achieved1 linked violation
April 9, 2003State Violation/Reminder Notice1 linked violation
March 20, 2003State Violation/Reminder Notice1 linked violation
March 20, 2003State Compliance achieved1 linked violation
July 14, 1988State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
April 7, 1988State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
September 2, 1987State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
April 29, 1987State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
December 1, 1986State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record

Contact

LONGWOOD GARDENS

610-388-5390

KENNETT SQUARE, PA 19348